Title :
A control system to compensate the hysteresis by Preisach model on SMA actuator
Author :
Hasegawa, Tadahiro ; Majima, Sumiko
Author_Institution :
Sch. of Eng., Nagoya Univ., Japan
Abstract :
Hysteresis phenomena often degrade system performance such as giving rise to undesirable inaccuracy. Shape Memory Alloy (SMA) actuators are chosen as an example of a plant with hysteresis and a control system to compensate the hysteresis is proposed in this paper. Firstly, a model which represents the temperature hysteretic property of SMA and its inverse model are designed. Secondly, a controller is proposed to compensate the hysteretic property by using the inverse model. Lastly, this method is applied to control the electrical resistance of SMA, which reflects its state, and the usefulness of the controller is confirmed experimentally
Keywords :
compensation; electric variables control; hysteresis; microactuators; nonlinear control systems; shape memory effects; Preisach model; SMA actuator; control system; controller; electrical resistance control; hysteresis compensation; inverse model; shape memory alloy actuators; temperature hysteretic property; Actuators; Control system synthesis; Control systems; Degradation; Hysteresis; Inverse problems; Shape control; Shape memory alloys; System performance; Temperature;
Conference_Titel :
Micromechatronics and Human Science, 1998. MHS '98. Proceedings of the 1998 International Symposium on
Conference_Location :
Nagoya
Print_ISBN :
0-7803-5130-4
DOI :
10.1109/MHS.1998.745777
